Non-chattering brake-hanger for car-trucks.



PATENTBD AUG. 13, 1907.

E. W. HOLST.

NON-CHATTERING BRAKE HANGER FOR GAB. TRUCKS.

APPLICATION TILED NOV. 20. 1906.

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W1 TJVESSES A TTOR/VE ys No. 863,277. PATENTED AUG. 13, 190?.

E. W. HOLST. NON-GHATTERING BRAKE HANGER FOR GAR TRUCKS.

APPLICATION FILED NOV-20,1906.

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l/V/ TNES I/WENTOR.

W 1 Q ATTORNEYS warren s'rarns PATENT NON-CHATTERING BRAKE-HANGER FORCAR-TRUCKS.

No. soaaw.

Specification of Letters Patent.

Patented Aug. 13, 190?.

Application filed November 20,1906. Serial No. 344.297.

To all about a may concern:

Be it known that I ENGELHARDT W; HoLsr, a citizen of the United States,residing at Brockton, in the county of Plymouth and State ofMassachusetts, have invented a new and useful Non-Chattering Brake-Hanger for Car-'lrucks, of which the following is a speci- I iication.

This invention relates to brake hangers for car trucks and its object isto provide hangers which are connected to the brake shoe head and thesupporting bracket in such a manner as to prevent the chattering noisewhich is often produced when brakes-are applied to the wheels of cars.

A still further object is t6 provide means for automatically taking upwear at the points of connection between the hangers and the shoe headsand brackets. I

With these and other objects in view the invention consists of certainnovel features of construction and combinations of parts which will behereinafter more fully described and pointed out in the claims.

In the accompanying drawings is shown the preferred form of theinvention.

In said drawings: Figure 1 is a view partly in side elevation and partlyin section of the hangers, supporting bracket and shoediead; Fig 2 is aview partly in transverse section and partly in front elevation of thehangers, bracket, and shoe head; Fig. is a. detail View of one of thewedges; Fig. 4 is a side elevation of a modiiication; and Fig. 5 is aview partly in front elevation and partly in section of saidmodification. 1

a supporting bracket having a passage 2 extending therethrough, the sidewalls of said passage having frusto-conicalrecesses 3 therein either orboth of which may communicate with openings 4, although if desired theseopenings may be dispensed with. The lower end of the passage 2 ispreferably enlarged as shown at 5 and the upper end is adapted to beclosed by a cap 6 detachably secured at one end between ears 7 on thebracket by means of a cotter pin 8 while its other end is extended undera tongue 9 projecting from the bracket 1. Oppositely extending forgedhangers 10 extend into the upper on d of the passage 2 and haveoppositely extending frusto-conical trunnions 11 which fit within therecesses 3. The adjoining faces of the hangers are preferably slightlybeveled adjacent the trunnions 11 as shown at 12 and are adapted to becontacted by opposite faces of a wedge 13 insertible between the hangersthrough the upper end of the passage 2. This wedge has a desired numberof recesses 14 in its upper end each recess containing a coiled spring15 which is adapted to be 'held under tension by the cap 6 when said capis secured in position as shown in Figs 1 and 2. A stud 16fpreferab1yextends downward from the cap into the spring s to prevent the upperportion of the spring i'rom been ng displaced. Obviously the spring 15exerts a constant downward pressure upon the wedge 13 and therefore saidwedge continually presses the hangers apart so as to prevent playbetween the trun nions 11 and their bearings.

The lower ends of the hangers 10 are also provided with oppositelyextending frusto-conical trunnions 17 similar to the trunnions 11 andthe inner or adjoining faces of the hangers converge toward their lowerends as shown at 18 in Fig.- 2. These'hangers are insertible intoarecess 19 extending into t is brake shoe head 26 from the upper facethereof. The upper portion of this recess is preferably enlarged as at21 and frusto-conicai recesses 22 are formed in opposite walls of therecess tension by a cap 26 which is located within a recess 27 in theupper face of the shoe head and extends between the hangers. This cap ispivoted at one end as shown at 28 and its other end is adapted to besecured within the recess 27 by a cotter pin 29.

From the foregoing description it will be seen that the hangers 10 arecapab e of swinging within the bracket 1 and as fast as the trunnions 11or the recesses 3 wear the'wedge 13 will be automatically pusheddownward by the springs 15 and will spread the hangers apart therebyforcing the trunnions furtherinto the recesses and compensating for anywear which may occur. The lower wedge 23 will operate in the same mannerto take up any wear occurring upon the trunnions 17 ,and the bearings22. A cotter pin 30 is preferably extended transversely through the shoehead and through a slot 31 in wedge 23 so as to absolutely remove anydanget of thewedge becoming dislocated. In view of the fact that thetrunnions are held at all times snugly within their bearings it isapparent that chattering wili not occur when the brake is appliedl Thewedges not only constitute efficientmeans for forcing the trunnions intotheir hearings to take up wear but also lioid their positively againstdisplacement.

Instead of constructing the parts in the manner shown in Figs. 1, 2 and3 and as hereinbefore described the parts may be formed as shown inFigs. 4 and 5. By referring to these figures it. will. he noticed thatthe supporting bracket 32 has oppositely disposed frusto-conicalrecesses 33 in its sides and em ending into these recesses arefrusto-conical trunnions 34 formed at the upper ends of hangers 35. Abolt 36 extends through the trunnions and the bracket 32 and has nuts 37thereon whereby the trunnions can be drawn toward each other so as totake up any wear which may occur between the parts. A pin SS is placedwiihin the bull so as to prevent the nuts from becoming detached. Withthis construction the wear will not be taken up mitomatieally. The ha itgets also have integral (-2-; tend- Eng trunnions 39 at their lower endswhien projert int ftns'to nica-l recesses 10 in opposite sides oi theshoe heads ll. and these trunnions are held seated by a bolt 42 andtightening means 43 in the sand.- manner as are the trnnnionsThe-preferred form of tilt invention has been set forth inthe'fl'oregoing description but myseh' thereto as I am aware thatniadilaations maybe made theieiti Without departing from the spirit orrificing the advantages thereof, anl 1 thoretoie reserve the right tomake such t'hangus as iallh' fall within the scope of the claims.

What; is claimed is:

I. Tho combination with an element having an openinr therein andoppositely (Xltllidilltf ret'esses in the walls oi the opening: ofhangers extending into the opening. trunnions extending in oppositediraetions and seated within the recesses. the adjoining fares of thehangers vanvorg- 'ing adjacent the t'rnnnions. a wedge interposedbetween and bearing upon the t-onverging faces of the hang'o and meansunattached to the hangs tor LXQlfillQ a coir slant longitudinal pressureupon the wedge.

2. The combination with an element havingan openingtherein. andoppositelyrxtmfiiittg reces es in the walls of the opening: of hangersextending into the opening. trnnnions extending in opposite directionsfrom the bane; ers and seat-ed within the recesses. a'wedg'e inter-pt dbetween and detached from the hangers. and means for exerting aconstantlongitudinal pre. ire upon the wedge.

.l. The Combination with 'an element having an opening therein andoppositetwdisposed recesses in the waliswf the opening: of hangersprojerting into the opening, trunnions thereon and projecting into therecesses. and spreading means detatthed f om and interposed between thehangers ad out the trnnnions.

4. The combination with an element having: an opening therein andopposirely-disposed recesses in the walls oi. the opening: of hangersprojet'ting into the opening. trnnnions thereon extendin y am thert-e'esses. a spreadin device interposed betw an and nnatta-chod to thebann rs adjacent to the trunnions. and means for exerting a constantlongitudinal pressure upon the said device.

T do not limit.

5. The t-ombinaiion of an element havin; an opening tilt-rein andoppositeLr-disposed recesses in the .walls of the opening. of banners prsting I'ill'OllL'li the opening. trnnnions thereon disposed within therec a spread in: de i'ro interposed between and unattached to thelmnaers adjacent the-trnnnions. and an anchoring means inmrseoting tinspreading device to prevent: removal thereof from the opening.

G. The combination with an element having an openim: therein andopposite! disposed revesses inthe walls of the opening: of bannerspioiocting into the opening". trnn nions thereon extending: into therecesses. spreading means interposed between and unattached to thehangers adjacent the trnnnions. means for exerting a constantlongitudinal pressure upon the spreading: device. and means for closingthe opening within the element.

7. The combination with an element having an opening: therein. andoppositely extending tapered recesses in the walls of the opening; o1:hangers extending into the opening. tapered trnnnions extending inoppofte dirertions from the hangers and seatedwithin the recesses. awmlge interposed betweehi the hangers, a removable rap extending overone end of the opening, and a sprin interposed. between the cap and wedand held under tension by the cap.

The combination with an element havingan opening therein. and oppositelyextending tapered reressrs in the walls of the opening; of hangeeat-ending into the openin tapered trnnnions extending in oppositedirot-tions from the hangers and seated within the rere. s. a wedgeinterposed between the hangers, and a retainingpin loosely engaging thewedge. I

S). The combination with a shoe head havingoppositely extending taperedrecesses therein. and a bracket having oppositely extending taperedrecesses therein: 0t ha :ers extending into the shoe head and bracket.oppositely extending tapered trnnnions upon the hangers and seat dwithin the recesses in the brarket and shoe head. and spring; pressedspreading de ices within the brat-hot and shoe head and interposedbetween the h; s.

In testimony that I claim the foregoing as my own. i have hereto aflixedmy signature in th lll't'St-iit't' of two witnesses.

